MIXED CONVECTION HEAT-TRANSFER IN OPEN-ENDED INCLINED CHANNELS WITH FLOW REVERSAL

Numerical solutions are presented for the problem of steady laminar mi xed convection in vertical and inclined parallel channels with asymmet ric isothermal boundary conditions. The flow and temperature fields at the entrance are assumed to be uniform and the resulting governing eq uations which are elliptic in nature are discretized in a control volu me approach using a vorticity-strean function formulation. Various gov erning parameters were: Gr/Re from about 70 to 14,000, the non dimensi onal temperature from 0 to 1 (symmetric heating) and the tilt angle fr om 30 to 90-degrees. The aspect ratio was 10 and constant. The results are presented in terms of flow and temperature fields and Nusselt num bers.